Severe weather 4/25-4/27

[weunice]

Severe weather. Heads up. This has the POTENTIAL to be bad in north Louisiana.

Someone on a forum I visit combined the three day threat area. It is large ... please stay informed.



Start with the next two days
http://www.spc.noaa.gov/products/outlook/day1otlk.html
http://www.spc.noaa.gov/products/outlook/day2otlk.html

A SUBSTANTIAL TORNADO THREAT APPEARS LIKELY TO EVOLVE -- SPREADING ACROSS NRN LA/AR AND THEN INTO WRN TN/NWRN MS LATE.

[weunice]

Heads up. http://www.spc.noaa.gov/products/watch/ww0205.html




Quote
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 205
NWS STORM PREDICTION CENTER NORMAN OK
325 PM CDT MON APR 25 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

MUCH OF ARKANSAS
NORTHERN LOUISIANA
SOUTH CENTRAL MISSOURI
EXTREME SOUTHEAST OKLAHOMA
NORTHEAST TEXAS

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 325 PM UNTIL
1100 PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 2.5 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH OF WEST PLAINS
MISSOURI TO 30 MILES SOUTHWEST OF SHREVEPORT LOUISIANA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 201...WW 202...WW
203...WW 204...

DISCUSSION...NUMEROUS STRONG/SUPERCELL THUNDERSTORMS ARE NOW
AFFECTING PORTIONS OF NORTHEAST TX/SOUTHEAST OK INTO WESTERN AR.
FAVORABLE AND INTENSIFYING LOW LEVEL WIND FIELDS...COUPLED WITH A
RAPIDLY DESTABILIZING AIR MASS WILL SUPPORT A RISK OF TORNADOES
/SOME STRONG/ AS WELL AS VERY LARGE HAIL AND DAMAGING WINDS THROUGH
MUCH OF THE EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25035.

[weunice]

FWIW a PDS watch (PARTICULARLY DANGEROUS SITUATION) means business. 60% chance of a significant tornado (EF2+)

[Champ967]

Thanks. I just sent my people home.

[qng001]

Storm passed. I was in the closet with my little Jack Russell who has some kicking breathe tonight.

[TechAlum05]

Storm passed. I was in the closet...

So now you're out of the closet? (lame joke, I know)

Nothing has happened weather-wise in Shreveport/Bossier City yet.

[weunice]

There are a couple of cells headed towards the Shreveport area now. One is rotating, heading just south of Oil City right now. It is SVR (Severe Thunderstorm) warned right now although if that couplet gets much stronger I expect an upgrade to a Tornado warning. There is another SVR warned cell that might slide south of town.

Vilonia AR seems to have taken a hit from a rather intense tornado. A rather known storm chaser is reporting that he saw scoured pavement north of town. That is often indicative of a violent tornado (although not necessarily) ... That velocity couplet on radar was quite impressive.

The most concerning cell in the area is the one near Lufkin. It is tornado warned.

[Geaux Dawgs]

There are a couple of cells headed towards the Shreveport area now. One is rotating, heading just south of Oil City right now. It is SVR (Severe Thunderstorm) warned right now although if that couplet gets much stronger I expect an upgrade to a Tornado warning. There is another SVR warned cell that might slide south of town.

Vilonia AR seems to have taken a hit from a rather intense tornado. A rather known storm chaser is reporting that he saw scoured pavement north of town. That is often indicative of a violent tornado (although not necessarily) ... That velocity couplet on radar was quite impressive.

The most concerning cell in the area is the one near Lufkin. It is tornado warned.

Yep, we had some wind gusts early and a little rain.....pretty weak actually. Being a property adjuster......I do like the bad weather

[weunice]

Its not over folks. Heads up tomorrow too.

[Ktulu7]

We just have the typical fire weather warning in San Antonio. People freaked out today when it drizzled for a few minutes.

[JFord]

What is it about North Central Louisiana that makes these storms disappear then reappear on the other side? Last night I did not get a drop in Ruston. I am thankful, just wondering if there is some sort of meteorological reason.

[Dawgpix]

What is it about North Central Louisiana that makes these storms disappear then reappear on the other side? Last night I did not get a drop in Ruston. I am thankful, just wondering if there is some sort of meteorological reason.

Wyly Tower in Ruston . . . ancient Indian burial grounds in Ouachita Parish.

[weunice]

SPC has gone with the HIGH RISK for today

[weunice]

Here is a link to the day 1 outlook.

http://www.spc.noaa.gov/products/outlook/day1otlk.html

IMHO the SPC has been very good this year. Busts are possible of course but I would advise everyone to stay informed today.

[weunice]

What is it about North Central Louisiana that makes these storms disappear then reappear on the other side? Last night I did not get a drop in Ruston. I am thankful, just wondering if there is some sort of meteorological reason.

In this case I suspect night time was the main reason. The storms really tailed off at 10pm last night. Baton Rouge had some high wind. The next two days have the potential to be historic in the south.